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The authors consider a model of tectonic waves in the lithosphere, caused by the strongest earthquakes in the Aleutian subduction zone and propagating from it into the Arctic shelf and adjacent land areas. They demonstrate that changes in thermodynamic conditions at the boundary between the rigid lithosphere and viscous asthenosphere can generate traveling wave disturbances. The mechanism of this phenomenon is associated with the fact that the rate of movement of the base of the lithosphere, which is the solidus line, does not coincide with the rate of movement of its surface, and the viscous reaction of the asthenosphere becomes a function of the kinetics of the melting process. The emerging traveling tectonic wave generates a decrease in normal stresses in the near-surface layer of the earth’s crust, which, according to the L. I. Lobkovsky hypothesis, leads to the activation of methane emission from the accumulation zones of metastable relict gas hydrates and the onset of sharp warming phases of the actual climate in the Arctic.

Deformation tectonic waves as a possible trigger mechanism for the activation of methane emissions in the Arctic